Intro Colby Brock is a social media personality and an Instagram star who is popular for his work as a Viner and a YouTuber as one-half of Sam and Colby. Sam and Colby's YouTube channel has grown to over 6.5 million subscribers and they had a million followers on Vine before it shut down in early 2017. He is kind, humorous, and has a contagious smile. He always smiles and is emo even though on the inside he is the opposite.
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